I've purcahsed mine via Ticketmaster this morning with no hassle. All tickets are despatched by special delivery and should arrive at your home on Saturday or Monday.
From the official website
Lower Tier: £32.50 Adults and £16 for concessions.
Upper Tier: £46 Adults and £23 for concessions
£43 Adults and £21.50 for concessions
£38 Adults and £19 for concessions.
Due to the size of the allocation and the lack of time available we have outsourced the selling of the tickets to Ticketmaster.
Tickets will be available to purchase on Thursday 29th from 8am and will be serviced by the largest ticket retailing call centre in the UK.
To purchase your ticket, please call the dedicated Cardiff City hotline on 0844 847 2528 from Thursday 8am.
Ticketmaster will be working from our database to validate all calls, so please have your fan number and payment details ready.
All tickets will be sold through Ticketmaster on the dedicated hotline number.
There will be a £1.50 booking fee per ticket and all tickets will be sent out special delivery.